Passage Four
We all know that the normal human daily cycle of activity is of some 7-8 hours’ sleep alternating with some 16-17 hours’ wakefulness and that, broadly s peaking, the sleep normally coincides with the hours of darkness. Our present concern is with how easily and to what extent this cycle can he modified.
The question is no mere academic one. The ease, for example, with which people can change from working in the day to winking at night is a question of growing importance in industry where automation calls for round-the-clock working of machines. It normally takes from five days to one week for a person to adapt to a reversed routine of sleep end wakefulness, sleeping during the day end working at night. Unfortunately, it is often the case in industry that shifts are changed every week; a person may work from 12 midnight to 8 a.m. one week, 8 a.m. to 4 p.m. the next, and 4 p. m. to 12 midnight the third and so on. This means that no s
A. to change shifts at longer intervals
B. to have longer shifts
C. to arrange for some people to work on night shifts only
D. to create better living conditions for night workers
Passage Four
We all know that the normal human daily cycle of activity is of some 7-8 hours’ sleep alternating with some 16-17 hours’ wakefulness and that, broadly s peaking, the sleep normally coincides with the hours of darkness. Our present concern is with how easily and to what extent this cycle can he modified.
The question is no mere academic one. The ease, for example, with which people can change from working in the day to winking at night is a question of growing importance in industry where automation calls for round-the-clock working of machines. It normally takes from five days to one week for a person to adapt to a reversed routine of sleep end wakefulness, sleeping during the day end working at night. Unfortunately, it is often the case in industry that shifts are changed every week; a person may work from 12 midnight to 8 a.m. one week, 8 a.m. to 4 p.m. the next, and 4 p. m. to 12 midnight the third and so on. This means that no s
A. body temperature changes when the cycle of sleep and wakefulness alternates
B. body temperature changes when he changes to night shift or back
C. the temperature reverses when the routine is changed
D. people have higher temperatures when they are working efficiently
Passage Four
The English language we know today is about six hundred years old. For half that time, English was just the language of the people living in England. The modern English language grew by about the year 1 400. Now English is the most widely spoken language in the world. It is one of the working languages at international meetings, business, science and other fields.
The differences between American English and British English are not very great. Written English is more or less the same in both Britain and America, though there are some spelling differences. For example, centre, licence, colour and travelled are spelt as center, license, color and traveled in American English. In America "cock, rubber, iii, holiday, lorry, post... "are called "rooster, eraser, sick, vacation, truck, mail..." But people from the two countries can still understand each other easily.
There are only a very small number of differences in gra
A. Rooster, eraser, color, truck , mail
B. Vacation, iii, travelled, licence, center
C. Mail, traveled, sick, color, license
D. Sick, truck, color, rooster, post
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